Pneumatically operated data processing system



Jan. 11, 1966 D. C. GRIFFIN ETAL PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM 11 Sheets-Sheet 1 Original Filed Aug. 29, 1961 M .m F F n .N .W F F 1 .W .m F F o. .m C: F

Fig-5 NEW 0 H HTO M FUW B 0 5% .AP W W .M E T ET M C L 0 ENNDE .T VOELA T WMR H A 3% DCGM Jan. 11, 1966 D. c. GRIFFIN ETAL PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM 11 Sheets-Sheet 2 Original Filed Aug. 29, 1961 INVENTORS DESMOND C. GRIFFIN CLARENCE M. BLYTHE GERALD T. HAMMOND MICHAEL POPOVICH BY W ATTORNEYS Jan. 11, 1966 D. c. GRIFFIN ETAL PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM 11 SheetsSheet 5 Original Filed Aug. 29, 1961 Fig-6 PUNCH PUNCH RETRACT COMB RECORD FEED PUNCH SUPPLY VALVE D WENW FTO O .M P M m? m WNNDH T OEL M T IMRA A SARC ELE DCGM

Jan. 11, 1966 D. c. GRIFFIN ETAL 3,

PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM Original Filed Aug. 29, 1961 11 Sheets-sheet 4 Fig.7 777 AUX. S O

INVENTORS DESMOND C. GRIFFIN CLARENCE M. BLYTHE GERALD T. HAMMOND MICHAEL POPOVICH AT TOR N EYS 1966 D. c. GRIFFIN ETAL 3,228,509

PNEUMATIGALLY OPERATED DATA PROCESSING SYSTEM Original Filed Aug. 29, 1961 ll Sheets-Sheet 5 0 MS 594 I 3;:

INVENTORS DESMOND c. GRIFFIN CLARENCE M. BLYTHE Fi 8 GERALD T. HAMMOND MICHAEL POPgVICH BY 0% 13m ATTORNEYS Jan. 11, 1966 D. C. GRIFFIN ETAL PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM Original Filed Aug. 29, 1961 SLOW REPRODUCE PUNCH SPEED 84 MEDIUM READ SPEED 83 ll Sheets-Sheet 6 Fig.9

FAST EJECT SPEED 82 TEMP. STOP MOM. STOP INVENTORS DESMOND C. GRIFFIN CLARENCE M. BLYTHE GERALD T. HAMMOND MICHAEL POPO ICH ATTORNEYS 1966 D. c. GRIFFIN ETAL 3,228,509

PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM Original Filed Aug. 29, 1961 ll Sheets-Sheet 7 L l 1 H @y STARTF'""'J I 30 gig O 1 1 v CD' Q9 I l 1 v 236 130 e l i e l I Q) Q) 1 l Y i i L126 127 l 5 I l l l E l I 1 l I I 46 i E l I 5 4 I I 5 I g i 237 D I E I 1 I I 24 232 231 g E I 3 D l j V l 223 /224 124 122| L s1 u 123 L 121 125 G) Q} Q) 1 I @EE Q TAB 350 A 2 G) I 353 351 352 I o Q) 's- 5 ozsn'll aYq o lFFm 5 225 CLARENCE 'M. BLYTHE 1 GERALD T. HAMMOND 53 MICHAEL POPOVICH 1235 227 S A i BY Ma. m

233 ATTORNEYS 1966 D. c. GRIFFIN ETAL PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM 11 Sheets-Sheet 9 Original Filed Aug. 29, 1961 H-3 1-3 i 1 1 406 405, H-4 1-4 I 1 1 I I 1-5 (D I @Q Q Q 380 A-5 5-5 0-5 0-5 E-5 F-5 5-5 I I I I 378 -3 I 1 .I

Jan. 11, 1966 D. c. GRIFFIN ETAL 3,228,509

PNEUMATICALLY OPERATED DATA PROCESSING SYSTEM Original Filed Aug. 29, 1961 ll Sheets-Sheet 1O INVENTORS DESMOND C. GRIFFIN CLARENCE M. BLYTHE ATTORNEYS This is a continuation of application Serial No. 134,702, filed August 29, 1961, now abandoned.

This invention relates to an improved pneumatically operated and controlled data processing system; and more particularly relates to a typewriter, record punch and record reader system having novel pneumatic control circuitry therebetween which affords greater flexibility and wider application in use as compared to conventional types of pneumatic systems.

The known types of pneumatically controlled typewriter units have been pretty much confined to letter writing applications, that is a perforated record is repeatedly read so that identical individually typed letters may be subsequently produced. In these conventional types of record controlledtyping systems there is little, if any, flexibility in the pneumatic interconnection between the record punch unit, the record reader unit and the typewriter which will permit an eflicient handling and/or programming of given data in a number of different ways.

One object of the instant invention is to provide a novel pneumatically controlled data processing system having a typewriter, a-record punch unit-and a record reader unit which are pneumatically interconnected in a manner which will allow various'combinations of the States Patent three units to control or be controlled by the data and/or I program information that is perforated in a record card or tape.

Another object of the invention is to provide a novel pneumatic record controlled system which is conditionable so as to be operable in response to predetermined codes in a perforated record to skip over or omit predetermined portions of the data contained in a record that is being read.

Another object of the invention is to provide a novel pneumatic record controlled system that is conditionable so as to be operable in response to predetermined codes in n perforated record and to condition the record punch unit so as to be capable of reproducing selected portions of the record tape.

Another object of the invention is to provide a novel pneumatic record controlled system which is conditionable so as to be operable in response to predetermined codes in a perforated record to stop at a predetermined point during a record reading and typing operation.

Another object of the invention is to provide a novel pneumatic record controlled system having a reader rec- 0rd feed drive means which is conditionable so as to be manually or record controlled to stop or to advance the record being read at any one of three or more different forward speeds.

Another object of the invention is to provide a novel pneumatic record controlled system wherein three separate drive means are provided for advancing the record through the record reader unit at three different speeds and wherein a pneumatic interlock is provided so that no one record drive means may be made operative until the other two have been made inoperative.

Another object of the invention is to provide a novel pneumatic record controlled system wherein provision is made for inserting an additional perforation in the. record adjacent the first one of double codes or the like that have previously been perforated so that a momentary interruption in the record feed may occur when, during a subsequent reading operation, the first such code is read; this additional perforation in the record also serving to stop the reading operation during a record reproducing function of the system.

Another object of the invention is to provides novel pneumatic record controlled system wherein a control means for the record feed drive means of a record reader unit is provided so as to be capable of stopping and irn--v mediately thereafter starting said feed drive means in 3,228,509. tented Jan,

Another object of the invention is to provide a pneumatic record controlled system wherein the record to be perforated and/or read is in the formof a plurality of individual fanfolded strips of card width tape which may be manually or automatically fed into the system; i in predetermined sequence and which may be subse quently stored or filed in accordance with any desired classification of the data therec m.

Another object of the invention is to provide a novel I pneumatic record controlled system wherein during 'a', reproducing operation where a type record and a new perforated record is being made, the pneumatic control:

circuitry may be conditioned so as to disable the reader record feed drive and the record perforator so that the reader record tape may be manually advanced whereby only the typewriter is temporarily operatively controlled i and operated by the record.

Another object of the invention is to provide a novel: pneumatic record control system having an interconnected typewriter, reader and punch andwherein the record feed device for the punch unit is automatically operated a predetermined number of times in response to the initiation of certain typewriter functions suchas carriage return, tab, back space, etc.

Another object of the invention is to provide a novel pneumatic record controlled system wherein a high speed forward recordfeed drive is provided for the record readerl unit and wherein said drive maybe operating and record is oppneumatic reading head disabled when no erative-ly positioned in said reader unit.

Other objects and many of the attendant advantage of this invention will be readily appreciated. as the same becomes better understood by reference to the following} detailed description when considered in connection with f the accompanying drawings in which like reference numerals designate like parts throughout the figures thereof and wherein:

FIGURE 1 is a side elevational view showing an exemplary pneumatically operated punch action and the FIGURE 3 is a side elevational view showing the con- I record feed drivemeans for the punch unit of the instant struction of a valve control linkage for initiating a singledistinct pressure pulse'pf short duration in response to the operation of a pneumatic actuator or bellows.

FIGURE 4 is a perspective view showing the construction of another valve control linkage for initiating two distinct pressure i-mpulses in response to the respective forward and reverse strokes of a single cyclic oscillatory movement of a control arm.

FIGURE is a sketch showing the manner in which FIGURES 6-13 arer'elatively oriented in order to collectively define the instant pneumatic circuit diagram.

FIGURES 6-13 collectively define the pneumatic circuitry for the instant-data processing system.

FIGURE: 14 is a table giving the code designations used in the instant system. I

The instant pneumatic data processing system essentially comprises three basic u'nits namely an electric type- I to become familiar with these valves and symbols before considering the details of the instant circuit diagram. Before discussing any of the details of the pneumatic controls between the typewriter and the'punch and reader units the mechanical aspects of the record punching and feeding means for the punch unit and also of the record reading and feeding means for thereader unit will be first described. Unless otherwise stated it will be understood that the various mechanical parts shown and described here are suitable mounted in 'a machine frame and cooperate in 'a more or less standard or conventional manner., In that each-of the 16 separate record punching actions of the record punch are similar only a single exemplary action need be and is illustrated in FIGURE 1. Here a punch 40 of the punch unit P is vertically reciprocally mounted ina suitable frame or guide means 41 and is axially movable so that its upper end is capable of slidably engaging the walls of two axially aligned holes respectively formed in the closely spaced parallel punch plates 42 and 43 between which the record 44 is adapted to be advanced as indicated by arrow 45. The punch 40 is power operated through an upwardrecord perforating stroke from the normal position shown by means of bellows 46' and is adapted to be driven downwardly through a return stroke by means of a bellows 47 operating on a flanged portion 48 of the punch through a comb 49 which is common to all the punches. Rotatably mounted on the punch frame is a pair of record feed rolls 50, 51 having rubber coated peripheries which frictionally cooperate so as to be capable of feeding the record 44 in a longitudinal direction as indicated by said arrow 45. Means are provided for rotatably driving the lower feed roll 51, such means comprising a ratchet'wheel 53 that is rotatably connected tothe roll 51 and which is adapted to be arcuately indexed in a counter clockwise direction 54 by means of an oscillating pawl 55. Pawl 55 is pivotally mounted at the outer end of an arm 56 secured to the movable wall of a bellows 57 which in the operating condition of the system is normally pneumatically retained in the. collapsed position shown. A frame anchored spring 58 is provided for lightly biasing the toothed end of pawl 55 into engagement with the teeth of the ratchet wheel 53. The movable wall of bellows 57 is formed with an arm .60 which is disposed between the respective operatingfingers of two impulse valves 61 and 62. -In its normal collapsed condition,

shown the bellows 57 maintains the impulse valve 62 open while valve 61 remains closed. When the bellows 57 is in an expanded condition the valve 61 is maintained open while valve .62 remains closed. As will be apparent when pawl 55 is oscillated by the successive operation of bellows 57 the ratchet wheel 5; and ecord 44'wil1be interto respectively maintain the fingers of the two impulse mittently advanced through successive predetermined distances.

The record reader unit R is illustrated in FIGURE 2. Here a reading head or tracker bar is provided, said bar having a plurality of laterally spaced and aligned record sensing holes or ports'370, .FIGURES 2 and 13, which are pneumaticallyconnected in the usual'manncr with their respectively associated output lines 71. As will 'be apparent if a sub-atmospheric pressure is normally maintained in the lines 71, then an atmospheric pressure impulse will be initiated in any of these lines when a corresponding hole in a perforated record 72 passes over the related sensing port of the tracker bar. The construction and operation of the instant tracker bar is conventional in nature except for the provision of several special sensing holes which will be discussed later. Drive means are provided for feeding the perforated record 72 in a longitudinal direction as illustrated by arrow 73, such means including a pair of cooperating rubber coated record feed rolls -74 and 75 which are rotatably geared together by any suitable gearing 76 when the rolls are in frictional engagement withthe record 72. The upper roll 74 isrotatably supported by means of a bail 77 which is biased by means of a spring 78 so that roll 74 is urged toward roll 75. A bellows 80 is operatively, connected to the bail 77 so that when collapsed the bellows will move roll 74 away from roll 75 so as to interrupt the feed drive for the record 72. Means are provided for rotatably driving the lower roll shaft 81 at any one of three speeds by means of three selectively operable gear trains 82, 83 and 84. In that each of these gear trains is similar a detained explanation of only one, say 82', is necessary. Herethe lower roll shaft 81 has secured thereto a gear 86 that is adapted to be engaged by a pinion 87 which is rotatably mounted on a'outer end of a clutch arm 90'. The arm 90 is pivotally mounted on a drive shaft 91 adjacent a gear.

92 that is secured to said shaft 91 and meshes with the said I pinion 87. Shaft 91 is driven by a motor 93 through a suitable speed reducing'gear unit 94. The lower-end of the clutch arm 90 is connected by a link 95 to a bellows '96. In the normal expanded condition of the bellows 96 the clutch arm 90 maintains the continuously driven pinion 87 out of mesh with the gear 86. When the bellows is evacuated and thus collapses the movement of arm 90 will swing the pinion 87 into operative engagement with gear 86 so as to rotatably drive the lower record feed roll 75 at a predetermined speed. The other two gear trains 83 and 84 are constructed in a similar manner and are respectively controlled by operation of the bellows 97 and 100. For a given speed of the motor the rolls 74 and 75 'may bedriven at a relatively low speed bygear train 84,

as shown in FIGURE 2, during record duplicating or re.- producing operation. The record drive rolls may be driven at an intermediate speed by means of the gear train 83 during normal record reading operationswhile said rolls may be drivenat arelatively high eject speedily the gear train 82 when a rapid non-reading advance of the record is desired. When an interruption in the recordadvance is desired regardless of the particular speed at which the record happens to be driven, the bellows 80 may be a collapsed to thereby separate the friction roll 74 from the roll 75 and terminate the record drive action of the rolls. Pneumatic interlock controls are provided for insuring that only one of the gear trains 82 84 is operative at-any one time as will be discussed later. The two bellows 97 and 100 are adapted in their normal expanded conditions valves 101. and 102 in open positions. When either of these bellows is collapsed by evacuation, the finger of the control of the typewriter. The pneumatic controls operated by actuation of the typewriter keyboard are generally indicated by the two dotted line rectangles 120, the keyboard having the usual data key-operated encoding valves, such as 121, which are related to the characters to be typed and also several key operated function control valves such as 122, 123, 124, 125, 126 and 127 which are associated with the various back space, carriage return, shift and similar function keys of the typewriter as will be described later. The harness between the typewriter and the encoding impulse valves, such as 121, may be similar to that shown in said Patent 2,964,108. The keyboard operated controls 120 are adapted to control the operation of both the record punch control valve assembly which is generally indicated by the reference numeral 130, FIGURES 6 and 10, and the punch record feed control valve assembly which is generally indicated by reference numeral 131, FIGURE 6. Each of the 16 separate record punch bellows 46, FIGURE 10, which correspond to the bellows 46' of FIGURE 1, is adapted to operate a separate record punch as described above for making a designated perforation in the record. The bellows 47 and 57, and the impulse valves 61 and 62 shown in FIG- URE 6 of the circuit diagram are those which are shown and described in connection with the FIGURE 1, punch unit apparatus. This drive means for advancing the record is of course operated after each code is perforated in the record. During a record reading operation the typewriter keys are adapted to be power operated by the various pneumatic punch actuators 132 of the selector unit 133, FIGURE 12, these punch actuators being controlled by the record reader unit. The reader unit includes the above described reading head or tracker bar 70, FIG- URES 2, 12 and 13, for pneumatically sensing the perforated record 72 and a decoder 134, FIGURE 12, which controls the selective operation of said punch actuators 132 of the selector unit. In this way the various keys of the typewriter are operated so as to type a record corresponding to the data sensed from the perforated record 72. The harness between the punch actuator 132 of the selector unit 133 and the type actions of the typewriter may be similar to that shown in said Patent 2,894,614. The record feed bellows 96, 97 and 100 for the advanc: ing of the perforated record over the reading head, as shown and described in connection with FIGURE 2, are controlled by a valve assembly generally indicated by the reference numeral 135, FIGURE 9, this control valve assembly additionally serving to provide the necessary interlocks for the operation of the bellows 96, 97 and 100 as will be further explained below. A control panel 136, FIGURE 11, is provided for affording a manual control over various parts of the punch and reader pneumatic control circuitry.

Two special pressure pulse initiating means shown in FIGURES 3 and 4 are provided in the instant apparatus. The valve control apparatus illustrated in FIGURE 3 is for initiating a pneumatic pressure impulse of short time duration in response to a control signal which may exist for a longer period. The movable wall 150 of the bellows 151, FIGURE 3, is provided with an arm 152 having a pivotally mounted pawl 153 thereon that is biased in a clockwise direction by a spring 154 to a normal position determined by engagement of the lower right side of the pawl with a small stud 155 fixed to said arm 152. The pawl is adapted to operate the finger 156 of the impulse valve 157. In operation when the bellows 150 is evacuated the pawl 153 will be swung through an are so as to engage and displace the impulse valve finger 156 through a short generally clockwise stroke. When the bellows 151 is completely collapsed the pawl 153 willhave moved below the lower end of the finger 156 thereby permitting the latter to snap back to its normal closed FIGURE 3 position. The impulse valve is thus momentarily operated so as to initiate an atmospheric pressure impulse of relatively short duration. This short time duration is of course unaffected by the length of time the bellows 15! remains collapsed. When the bellows 151 is expanded the pawl 153 in engaging the end of the impulse valve finger will be rotatably displaced in a counter clockwise direction against the action of spring 154 and will thus inefiectively ratchet back past said impulse valvefinger to I its normal FIGURE 3 position.

The purpose for the valve control apparatus illustrated in FIGURE 4 is to afford a means for obtaining two different pressure impulses from the respective forward and reverse strokes of a single cyclically oscillated member; The two fingers and 161 are respectively associatedv with two impulse valves 127 and 126, FIGURES 4 and 10, said fingers being adapted to be alternately displaced by the respective adjacent abutment ends 162, 163 of a triangular operating plate 164. Plate 164 is formed with a central vertically elongated slot 165 in which is disposed a stud 166 that is secured to the valve body 167. An arm 168 pivotally mounted on said stud 166 is provided with a pin 170 which is adapted to engage the inclined side of the upper apex portion of said triangular plate 164. The upper end of arm 168 is formed with a slot 171 in which is disposed a lug 172 that is secured to the end of a lever 173. In the instant apparatus the lever 173 forms part of the case shift linkage of the typewriter. The impulse valve fingers 160, 161 normally engage the ends 162, 163

of the triangular plate and maintain the latter in an elevated position wherein the lower end of the plate slot 165- is near the stud 166 as shown in FIGURE 4. When the typewriter is shifted to an upper case condition the lever 173 will be moved so as to swing the arm 168 in a clockwise direction, FIGURE 4, whereby the pin 170 will momentarily cam the triangular plate so that the right hand end 163 engages and lowers the finger 161 of the impulse valve 126 as said pin 170 wipes past the apex of said plate. At the completion of this stroke of the lever 168 the pin 170 will be on the right side of the plate apex and the plate 164 will move to "its normal FIGURE 4 position wherein both of said impulse valves 1.26, 127 are closed. The operation of the impulse valve fin'ger 161- direction and the pin 170 in wiping past the apex'of said triangular plate will cause the plate end 162 to swing downwardly in a generally counterclockwise direction so i as to thereby engage and downwardlydisplace the impulse valve finger 160 and thus initiate a pressure impulse in the output line associated with the impulse valve 127. At the end of the counterclockwise stroke of arm 168 the. pin 170 will be on the left side of the plate apex as shown in FIGURE 4 and the triangular plate will again be biased to its normal upper position shown wherein both of said impulse valves 126, 127 are closed. Inthis manner a different pressure impulse is obtained for the respective forward and reverse strokes of the oscillating;

cyclically operated typewriter case shift linkage lever 173.

In order to fully understand the operation of the pneumatic circuit diagram of FIGURES 6-13 it is necessary to be familiar with the construction and operation of the various pneumatic valves employed. These valves and their symbols are fully discussed in prior art patents such as those cited above. Unless otherwise indicated the valves and associated arrangements are the same for the instant disclosure as set forth in said patents. In the instant diagram, unles otherwise stated, the abrupt end of a pneumatic line maybe considered open to the atmosphere and valve symbols having small circles therein denote that the valves are connected through a bleed hold to a sub- I being well known need not be particularized here.

atmospheric pressure supply in the usual manner. Control lines connected to the upper side of an on-olf valve may be considered to be arranged for turning the valve off while those connected to the lower side turn the valve on. I

The main vacuum or sub-atmospheric pressure pump 200 (FIGURE 7)' and associated conventional type safety valve 201 are connected. so as to afford a sub-atmospheric pressure supply to the various valve assemblies. One

'main supply line 202 is connected to supply the large primary valve assembly 203 (FIGURE 6) whose output controls the sub-atmospheric pressure supply for the record punch unit. The othet' main supply line 204 .(FIGURE 7) is connected to the port 205 (FIGURE 11) of the manually operated main control switch 206. The

Switch handle 207 may be manually set in any one of is in the punch position SP the port 205 is pneumatically connected to both ports 210 and 213. When the handle is in a correct position SC port 205 is connected to port 212 and when the handle is in the reader position SR the port 205 is connected to port 214 and the port 210 is connected to port 211. The general mechanical construction of this type of main switch is conventional in nature and As will be apparent when the switch handle is in the punch position SP a sub-atmospheric pressure will exist in all the lines and valves that are marked SP. Similarly when the switch handle is in the reader position SRa sub-ab mospheric pressure will exist in all lines and valves that are marked SR. When a sub-atmospheric pressure supply exists at port 213 no such supply exists at port 214, and vice versa.

It will be understood that when the switch 206 is in any of its punch, correct, or reader conditions a subatmospheric pressure supply will be operatively connected to those pneumatic valve assemblies required for the operation called for -by the said switch condition as is well understood in the art. The encircled letters PS, MS or SSappearing in the various dotted line rectangles of the circuit diagram mean that that particular valve assembly. is pneumatically connected to the sub-atmospheric punch supply, the main supply, or the selector supply respectively as will be further explained below.

When a normal record punching operation is to be performed the .main switch ports 205 and 210 are connected and a sub-atmospheric pressure supply exists in the switch port 210 and line 215 which is connected to the control line 216 (FIGURE 6) of said punch supply primary valve 203. Thus with the primary valve-203 in its normal condition a. sub-atmospheric pressure will exist in the valve output line, 217'thereby affording the necessary pressure supply for the said pneumatic control valve assemblies 131, FIGURE 6, which controls the operation of said punch record feed bellows 47 and 57, FIGURES l and 6, and to the punch bellows control valve assembly 130 through lines 220 and 221, and to various other valve assemblies labelled with the encircled letters PS.

The pneumatic circuitry for operating the punch unit under the control of the typewriter will now be described. The operation of each power action of the electric typewriter is adapted to operate an impulse valve which initiatesa pair of coded pressure'impulses in a manner similar to that illustrated in said Patent 2,964,108. Let it be assumed that the said impulse valve 121, FIGURE 10, of the valve assembly. 120 is exemplary of any of the character typing actions of the typewriter and that the other typing actions operate in a corresponding manner. The impulse valve, which is operated when the letter "q is to be typed, has two output lines 223 and 224. The

line 223 is connected to. the control line 225 of a secondary valve 226 whose output line 227 is connected to .the bellows 46, FIGURES 2 and 10. The other output line 224 from the impulse valve 121 is connected to the control line 2300f a secondary valve 231 whose output line 232 is connected to the punch bellows 46". apparent when a qf is typed'the 'impulse valve 121 will be opened and the resultant atmospheric pressure pulses in the control lines 225 and 230 will cause the secondary valves 226 and 231 to operate so as to collapse the bellows 46 and 46" thereby punching a pair of code holesA I and 3 in the record, said A-3 code combination being rep resentative of the letter q. The designation for each code bit punched in the record by the various punch bellows 46, shown in FIGURES 6 and 10, are listed adjacent the respective bellows and in accordance with the code designations or hole combinations given in the table of FIGURE 14. After the punch bellows 46', 46" and the associated punches such as 40, FIGURE 1, have been thus operated they must .be withdrawn and the record advanced a step preparatory for the next punching operation. To this end the output line 227 of secondary valve226 associated with the punch bellows 46' is connected by a line 233 so as to control a blocking valve 234 having a flow line 235 that is connected to a common control line 236. Line 236 which is normally evacuated through the bleed hole 237 is connected so asto control a primary valve 240, FIG- URE 6, in the record feed control valve assembly 131. The output line 241 of the primary valve 240 is serially connected to the bellows 47 and 5.7 described .above in connection with FIGURE 1 In similar fashion the output line 232 for the secondary valve 231 associated with the punch bellows 46" is connected through line .242 so as to control a blocking valve 243'whose flow line244 is also connected to said common control line 2362' As shown in the circuit diagram the control circuit for each bellows 46 is pneumatically connected to the common control line 236 in the same manner as that just described for bellows 46 and 46". Asnoted above the common control line 236 is normally evacuated and thus a subatmospheric pressure will normally exist in the output line 241 of the primary valve 240 thereby normally retaining both the bellows47 and 57 is collapsed condition. When the record punch bellows 46' and 46" (or any of the other bellows46) are operated as above described so as to perforate the recordv 44, FIGURE 1, an atmospheric pulse will always be initiated in the common' control' line 236 so as to initiate a feed movement of the record. This atmospheric. pulse in line 236 will operate the primary valve 240 so that an atmospheric pressure will exist in the output line; 241 and hence both'bellows 47and 57 will be opened or expanded. The collapsing of the punch bellows 46 which serves to perforate the record 44,FIG- URE 1, and the expanding of the bellows-47 and 57 occur at about the same time; theexpandin'g of bellows 47 lifting the common punch restoring comb 49, FIGURE 1, permitting the upward movement of the punchsQSuch as 40, while the expansion of bellows 57 idly ratchets the pawl 55 to the right, FIGURE 1, preparatory for a subsequent record indexing movement in the opposite direction upon the immediately following collapsing of said bellows Upon termination of the atmospheric pulses which operate the punch bellows 46, the pulse in said common control line '236 will also be terminated and the primary valve 240 in being restored to normal condition will evacuateand collapse the bellows47 and 57; the bellows 47 through said common comb 49 thereby serving to withdraw the actuated punches from the record and the bellows 57 thereby serving to move the pawl 55 to the left, FIGURE 1, so as to advance or index the ratchet wheel 54 and the record 44 through a predetermined distance preparatory for the next code punching and record feed- As will be writer are serially operated. When a non-printing control function key of the typewriter is operated, such as back space, carriage return, etc., an appropriate two hole code is perforated in the record in substantially the same manner as that just described for character codes.

The pneumatic circuits for the various typewriter function controls will now be discussed. The impulse valve 122, FIGURE 10, associated with and operated by the typewriter back space linkage is connected to perforate a I1 code in the record while the impulse valve 124 associated with and operated by the typewriter tabulating linkage is connected to perforate a I-6 code. The impulse valve 125 associated with and operated by the typewriter carriage return linkage is connected to perforate a I- code in the record. A special key is provided on the typewriter keyboard so as to be adapted to operate the impulse valve 123 which is connected through the flow lines 245 of the open blocking valve 246, FIGURE 6, and through lines 571 and 574 so as to control the perforating of a single number 9 code hole in the record as will be further discussed later. The control valve assembly 120 also includes the impulse valves 126 and 127, FIGURE 10, which are operated in response to case shift movements of the typewriter in the manner above described in connection with FIGURE 4. When the typewriter is shifted from lower to upper case the shift impulse valve 126 will be operated as described above so as to perforate an I4 code in the record. The pressure impulse initiated in the output line 247 of the shift impulse valve 126 is amplified and encoded by the signal booster valve combination of the pouch actuator 248 and the impulse valve 249 which is part of the booster valve assembly 250 and which has two output control lines 251 and 252 which control the punching of said I4 code in the record. The valve combination of the pouch actuator 248 and the impulse valve 249 may be structurally similar to that illustrated in FIG- URE l of US. Patent 2,932,375. When the typewriter is unshifted from upper case to lower case the impulse valve 127 will be operated as above described. The pressure impulse in output line 253 of impulse valve 127 is amplified and encoded by another booster valve combination of a pouch actuator 254 and impulse valve 255, the two output lines 256 and 257 of the impulse valve 255 being connected so as to control the punching of an I2 code in the record. As will be apparent the serial operation of service or control function keys of the typewriter and also the character keys will all serve to effect a serial perforating of the record 44 codes that respectively correspond to the particular typewriter keys operated.

Inaddition to being controlled by operation of the typewriter the record punch unit may be controlled and operated in a similar manner from the control panel 136, FIGURE 11, for perforating certain special codes in the record. Along the left side .of the control panel 136 there is provided a row of nine manually operable impulse valves 260-268 each of which is associated with the punching unit and is adapted to perforate a particular code in the record which is representative of some record feed control and some special other function the purposes of which will be discussed later. These nine impulse valves 260468 will be referred to as the punch on, punch off, auxiliary stop, select, skip, eject, delete, stop, and start valves respectively. The pouch on valve 260 has three output lines 270, 271 and 272, lines 271 and 272 being connected so as to control the perforationof an A-Z code in the record while the other line 270 is connected to a common special record feed control line 273. The purpose of line 273 will be presently discussed. The punch off impulse valve 261 has three output lines 274, 275 and 276; lines 274 and 276 being connected to control the perforating of an A-l code in the record while the other line 275 is connected to said common special record feed control line 273. The auxiliary stop impulse valve 262 has three output lines 277, 280, and 281, lines 277 and 281 being connected to control the perforating of an H-6 code in the record while the other line 280 is connected to said common line 273. That select impulse valve 263 has three output lines 282, 283,"

and 284; lines 282 and 283 being connected so as to control the perforation of a H-S code in the record while the other line 284 is connected to the common line 273.

The skip impulse valve has one output line 285 which is connected so as to perforate a single number 9 hole in the record. The eject impulse valve 265 has two lines 286 and 287 which are connected so as to perforate a 5-6 code in the record. The delete impulse valve 266 has one output line 290 which is connected so as toperforate a number 8 hole in the record. The stop impulse valve 267 has three output lines 291, 292 and 293, lines, 291 and 292 are connected so as to control the perfora tion of an L3 code in the record while the line 293 is connected to the common line'273. The start impulse valve 268 has two output lines 294 and 295. line 295 being connected throughthe flow lines 296 of a blocking valve 297 so as to control the perforation of a" start code by operation of the start punch bellows of FIGURE 10.

The above mentioned blocking valve 246 and the blocking v valve 297 form part of a blocking valveassembly 300.

When the handle 207 of the main control switch 206 is in the pun-ch position SP the manual operation of any of the punch unit control impulse valves 260-268 will effect a record punching and feeding operation similar to I that above described for the keys of the typewriter.

When a record has been perforated and is to be read or sensed by the reader unit of the instant pneumatic data processing system there are several operations of the mechanical parts of the apparatus which take a little:

longer to execute than the time required for just typing a character. the typewriter carriage is to be returned. Here it takes a relatively long period of time for the carriage return movement to be completed and obviously no typing or similar operations should be attempted during this period.

If, as here occurs, the record is continuously fed over the reading head or tracker bar 70, as is illustrated in FIGURE 2, then it is apparent that duringa reading operation an empty or non-perforated space must be provided in the record after a carriage return code perforation,'this empty space being sufiiciently long so as'to permit the completion of the carriage return movement of the typewriter before the next -hole coded in the moving. record is sensed by the tracker bar 70. From this discussion it will be apparent that when the record isinitially being perforated every time a long duration service funcseveral codes whose function. execution during a subsequent reading operation will require a relatively long period to complete. The service functions requiring this short empty or non-perforated space in the record include the carriage return, tab and back space operations. Also means are provided so that when certain of the said punch control impulse valves of the control panel 136 are manually operated to perforate the record a similar extra non-punching advance of the record is accomplished. These special means for automatically advancing the record through several extra spaces will now be explained. 1

Referring to the pneumatic record feed control for the punch unit as shown in FIGURES land 6, it was explained above that the record, feed bellows 57 is adapted to be operated each time one of the record punching bellows 46 is operated. There is however an additional record feed secondary valve 320 which does notcontrol the operation of a punch bellows but has an output line 321 which is connected to the control line 322 of a blocking valve 323 having a flow line 324 which is connected.

An example of such an operation is when mined storage volume.

1 l to the said common record feed line 236 whichcontrols the operation of said record feed bellows 57. After any one of the above noted long duration type codes is punched in the record a predetermined number of successive atmospheric pressure impulses are automatically initiated in the control line 325 of said secondary valve 320 so that the record will be advanced a corresponding number, of spaces. The means for automatically initiating this predetermined number of impulses comprises a pneumatic capacitance circuit which is fully shown and described in the commonly owned copending patentapplication by Clarence M. Blythe and Gerald T. Ham mond, Serial No. 122,477, for Pneumatic Capacitor and filed on or about July 14, 1961, now US. Patent 3,127,746. This capacitor type of apparatus and circuit is included in the instant diagram and will be briefly discussed here for review purpose. It further details as to construction or operation of this type of circuit is desired reference may be made to said copending application. The control line 325 (FIGURE 6) of the secondary valve 320 is connected through the flow lines326 of the blocking valve 327 to the output line 330 from a pneumatic storage tank or capacitor 331 that has a predeter- The blocking valve 327, as well as the adjacent blocking valve 297, is controlled by the output line 332 of the on-olf valve 333 having control flow from the capacitor 331 to the secondary valve 37:0

so as to repeatedly operate the record feed bellows :7.

T he succession of atmospheric pulses from the capacitor 331-continues until all the air stored in the capacitor is exhausted whereupon further advancing of the record stops. As was mentioned above in connection with FIGURE 1 the bellows 57 is normally collapsed and the impulse valve 62 is thus normally openwhile impulse valve 61 is closed. Upon expansion of sair iellows 57 the impulse valve 62 is closed and the im-pu. valve 61 is opened. Under these conditions the on-olr' valve is normally on thereby causing a sub-atmospheric pressure .to exist in the output line 332which in turn retains the blocking valve 32'! in an open position. The blocking valve 327 being normrily. open causes the capacitor 331 to be normally evacuated with the result that even though durirg each regular punching operation the. on-off valve 333 is operated and the blocking valve 327 is thereby also opened there will normally be no air available to the repeat record feed secondary'valve 320 for repeatedly advancing the record as above described. When however one of the special long duration type codes, such as a carriage return I-5 code, is perforated in-the record the capacitor will be filledwith air as will be described and will thus be capable of prompting, through the open blocking valve 327, a repetitive actuation of the secondary valve 320 and thus the record feed bellows 57 to thereby advance the record through several spaces. The pneumatic connections for filling the capacitor when said long duration type codes are to be punched in the record are as follows. The output lines 350, 351 and 352 from the back space, tab and carriage return impulse valves 122, 124 and 125 of typewriter keyboard control 120, FIGURE 10, are connected to a common line 353 that is connectedto a temporary stop pouch actuator 354, FIGURE 8, of a signal amplifying or booster valve as,- sembly 355. The impulse valve 356 operated by the pouch actuator 354 has a first output line 357 which .is connected to a common control line 360. which in turn is connected to an input line 361 to said capacitor 331. The above noted common controlline 273 connected to several of themanually operated impulse valves of the control panel 136 is also connected to the inputline 361 of said capacitor. As will beapparent when an impulsevalve associated with the back space, tab, or carriage return keys of the typewriter, or a punch on, punch ofl, auxiliary stop, select, and start impulse valve of the con-. trol panel 136 are operated to punch a corresponding code in the record the capacitor 331 will at the same time be titled with air thereby permitting the desired'predetermined number of extra non-punching record feeding steps of the feed bellows 57. This will enable the record tape to be properly read as it continuously moves over the tracker bar 70 during subsequent record reading operations. V

Let it be assumed that a perforated record has been made and that it is desired to read the same and reproduce the data in said record either by typing the information or by making a new but identical perforated record, or both. The record reader unit is provided with a pneumatic reading head or tracker bar 70 and an associated three speedrecord feed drive means as was discussed in connection with FIGURE 2. The tracker bar 70 isprovided with a plurality of record sensing apertures or holes 370 which are respectively noted in FIGURES 12 and 13 with number or letter designations which correspond to the code of designations shown adjacent the various punch bellows 46 of FIGURES 6 and 10. The two extra holes 371, 372 diagrammatically shown in FIGURE 13 as being at the right end of the tracker are actually disposed at the opposite ends of the tracker bar as shown in FIGURE 2. The tracker bar holes designated A through I and 1 through 6, and used for the two hole data codes indicated by the table in FIGURE 14, are operatively connected to the pneumatic decoder 134, FIGURE 12. The holes designated start, 7, 8, 9 and 371, 372 are used for special or function control circuits as will be subsequently discussed. The data code holes A and I and 1 to 6 are operatively connected to the rectangular coordinate type decoder 134 so that each of the nine letter coded holes A to I of the tracker if-.11 controls the operation of an associated vertical column of blocking valves in the decoder, while each of the six numbered holes 1 to 6 of thetracker bar controls the operation of an associated horizontal row of the same blocking valves of said decoder. As will be apparent when a perforated record code comprising one letter hole and one number hole are read one vertical'colurnn and one horizontal row of the decoder blocking valve matrix arrangement will become operatively conditioned so that the one blocking valve representing the intersection of said one column and one row will give a singlel output impulse which defines the decoded information or character which is to be typed. In that the connections and operations controlledv by the reading of each two hole data or character code are similar'a detailed explanation of only one such code will be given here. Let ill-be assumed that the said code A-3 for the letter q is'to be read. The A hole of the tracker bar is connected. by its associated line 71 so as to control the primary valve 373 of the valve assembly 374. The output line 375 of valve 373 is connected in parallel to the flow lines 376 through 381 of the respective blocking valves A-1 through A-6 which are arranged in a vertical column as illustrated in FIGURE 12. In that a sub-atmospheric pressure normally exists inthe output line 375 from the primary valve 373 a vacuum supply will be normally available in'the' flow lines 376 to 381 of saidvertical column of blocking valves. The 3 hole of the tracker bar is connected by its associated line 71 through the How line 400 of a blocking valve 401 so as to control the secondary valve 402 of thevalve assembly 403. The output line 404 of valve 402 is connected to each of the control lines 405 through 413 of a horizontal row of blocking valves A3.through I-3 respectively. in the output line 404 of the secondary valve 402 the said horizontal row of blocking valves will all be normally closed. As will be apparent when the q code A-3 is sensed the resultant atmospheric impulse through the A hole of In that an atmospheric pressure normally exists the tracker bar will cause the secondary valve 373 to operate and thereby admit atmospheric pressure to all the flow lines 376 to 381 of the said vertical column of blocking valves.

Simultaneously the atmospheric impulse through the 3 hole of the tracker bar after passing through the j horizontal row. The A3 valve at the intersection of said column and row of blocking valves is thus the only blockatmospheric pressure available in the flow lines thereof. The flow line 414 of the blocking valve A-3 is connected to the q pouch actuator of the selector unit 133, this pouch actuator being adapted to operate the q bar linkage of the type writer in the usual manner.

Each of the various blocking valves of the decoder 134 is connected to an associated pouch actuator of the selector unit 133 in a manner corresponding to that just described for the valve A-3 so as to operate a related linkage of the typewriter in response to the respective codes sensed from the record. As is indicated in FIGURE 12 the blocking valves H-4, I-l, I- and 1-6 of the decoder 134 are operatively connected so as to control the pouch actuators respectively associated with the space, back space, carriage return and tab function linkages of the typewriter. The blocking valve 1-4 (for case shaft) is operatively connected by a line, not shown, to the pouch actuator 420 of said booster valve assembly 355, FIGURE .8, the pouch actuator 420 being mechanically connected to operate the impulse valve 421. The output line 422 of the impulse valve 421 is connected to the off control line 423 of a conventional type bistable pneumatic on-off valve 424. The output line 425 of valve 424 is connected tothe shift pouch actuator of the selector unit 133, FIGURE 12; this pouch actuator serving to shift the typewriter from lower to upper case condition. The output flow line of the unshift blocking valve I-2 of the decoder 134 is operatively connected by a line not shown to a line 430, FIGURE 11, which in turn is connected to the on control line 430a of said on-otf valve 424, FIGURE 9. It will be apparent then that during a record reading operation the case shift control linkage of the type writer will be held in either an upper or lower case condition by the on-olf valve 424 which is controlled by the shift and unshift blocking valves I4 and 1-2 of the decoder 134. In accordance with the operation of the above described data and function confeed drive means of the record reader will be considered first. As illustrated in FIGURE 2 the three bellows 96, 97 and 100 may be selectively operated in order to control the speed at which record is fed over the tracker bar 70 while the bellows 80 is operable to temporarily interrupt any feeding movement of the record by separating the feed roll 74 from roll 75. These four bellows together with the momentary pulse control bellows 151 described in connection with FIGURE 3 are shown in FIGURE 9 of the circuit diagram and a discussion of some of the interlocking pneumatic controls associated therewith will now be made. These pneumatic controls are primarily effective to insure at all times that when a record feed movement is called for one and only one of the three gear trains 82, 83 and 84, FIGURE 2, is operatively engaged at any one time. Referring to FIGURE 9 the slow reproduce punch speed bellows 100 is connected by a line 429 to the open ended flow line 430 of a blocking valve 431 and to the flow line 432 of a blocking valve 433. Flow line 432 is connected to the output line 434 of a start-stop on-olf. valve 435, which has on and oil control lines 436 and 437, line 436 being connected to the flow lines 440 of .10 ing valve of the decoder 134 which is opened and has an,

I4 a blocking valve 441. The other output line 442 from the start-stop on-oli valve 435 is connected to the flow lines 443 of a blocking valve 444, said fiow lines 443 being connected to a line 445 to the medium speed bellows 97. Line 445 is also connected to the flow lines 446 of a blocking volve 447 and the control lines 450 and 451 of J blocking valevs 433 and 447 are connected by line 452 to the control line 453 of a secondary valve 454. One'output line 455 of valve 454 is connected to the control lines 456' and 457 of said blocking valves 431 and 444. The other output line 460 of the secondary valve 454 is connected to the control line 461 of a blocking valve 462 and continues on to other parts of the circuit as indicated by the arrow 463. The letters R.P.S. (reverse punch supply) ad jacent the arrow 463 are indicative of the fact that the pressure in the line 460 is opposite or reversed from the punch supply pressure conditions to the secondary. valve 454, i.e. when the punch supply pressure in the valve control line 453 (which is connected to the subatmospheric punch supply pressure as indicated) is on a sub-atmospheric pressure will exist in the valve control line 453 while an atmospheric pressure will exist in the valve output line 460; conversely when an atmospheric pressure exists in the control line 453 a sub-atmospheric pressure in the circuit diagram in order to promote clarity. The flow lines 465 of blocking valve 462 are connected to the impulse valve 101, note FIGURE 2, and to the flow lines 466 of a blocking valve 467. The flow lines 466 are 0011 f nected to the impulse valve 102, note FIGURE 2. The flow;

lines 465 of blocking valve 462 are connected to the con:

trol line of a secondary valve 471 having an output line I 472 that is connected to the control line 473 of a blocking valve 474. The fiow line 475 is connected to the control line 476, FIGURE 13, of a blocking valve 477, said control line 476 also being connected to a line 480 which connects back up to the fast eject speed bellows 96. The flow line 475 of valve 474 is also connected to one output line 482 of an eject on-olf valve 483 having two control lines 484 and 485. The other output line 486 is connected to the control lines 487 and 489 of the three blocking valves 490, 491 and 492. The How lines 500 of blocking valve l 490 are connected to the flow lines 501 of a blocking valve 502 and to the control line 503 of a selector unit pressure supply primary valve 504 having a first output line 505- that is connected to the control line 506 of a blocking valve 507 and a second output line 510 that is connected to the selector supply line, not shown, as indicated by the letters SS. Theline 510 is connected to those various 7 other lines and/or valve assemblies of the circuit that are also designated by the letters SS, some of these line connections not being shown for the sake of clarity in the circuit diagram. The tiow lines 511 of said blocking valve 491 are connected to the control line 512 of said blocking valve 441 while the flow lines 513 of the blocking valve 492 are connected to the said control line'430a of the 2 shift on-ofi? valve 424. The flow lines 515 of the blocking valve 507 are connected to the control line 516 of a sec:

ondary valve 517 whose output line 520 is connected to said temporary stop bellows 80, note FIGURE '2.

A secondary valve 522 is provided having an output line V l 523 connected to the said momentary stop bellows 151,

note FIGURE 3, which cooperates inthe manner described with the impulse valve 157 to give a momentary pressure impulse in the two valve output lines 524 and 525. Line 525 is connected to the flowlines 515 of blockingvalve 507 while line 524 is connected by a line not shown to the pouch actuator 526, FIGURE 10, of the signal booster valve assembly 250. The actuator 526 is adapted to operate an impulse valve 527 having an output line 530.

As previously mentioned the primary purposeol? the above described interlocking pneumatic circuit for the valve assembly 135, FIGURE 9, is to control the timing and interrelation of the operation of the various record teed drive means illustrated in FIGURE 2. This control valve assembly 135 is connected to various other parts of the general circuitry as will now be described. The control line 851 of the secondary valve 522, FIGURE 9, is connected through the flow lines 532 of a blocking valve 533, FIGURE 13, to the 7 hole of the record reading head or tracker bar 70. The blocking valve 533 and a blocking valve 534 have a common control line 535 which is connected through a line 536 to the elongated number 8 hole of the tracker bar 70. The line 536 is further connected to the common control line 537 for the six blocking valves 540, 541, 401, 542, 543 and 544 and to the main supply as indicated by the letters MS. The flow lines 545, 546, 400, 547, 548 and 549 of the said six blocking valves .are respectively connected to the 1, 2, 3, 4, and 6 holes of the tracker bar 70 and also to the respective control lines of the six secondary valves 555, 556, 402, 557, 558 and 559; these six secondary valves controlling the above described six horizontal rows of blocking valves of the decoder 134. A line 560 is connected from said common blocking valve control line 537 to the control line 561 of a blocking valve 562and to the flow lines 563 of a blocking valve 564. The control line 565 of valve 564 is connected to the port 212 of the main control switch 206, FIGURE 11, by a line 566, parts of which are shown in FIGURES 9 and 13. A line 567, FIGURE 9, con nects line 566 with the control line of the blocking valve 502. The flow line 570 of the blocking valve 534, FIG- URE 13, is connected to the 9 hole of the tracker bar 70. Flow line 570 is also connected to the flow lines 571, FIGURE 6, of a blocking valve 572 having a control line 573 which is connected to the punch supply. The flow lines 571 of valve 572 are also connected to said flow line 245 and to the control line 5740f secondary valve 575 in the punch unit. The output line 576 of valve 575 is adapted to operate the punch bellows 46 for the number 9 skip code hole. The two special holes 371 and 372 provided in the tracker bar are actually located at the extremeends of the tracker bar as indicated in FIG- URE 2 but are shown adjacent to each other in FIGURE 13 of the circuit diagram in order to promote clarity. These two holes are connected by a common line 580 which is connected through the flow lines 581 of the blocking valve 577 to a control line 582, FIGURES 13, 12, 7 and 8, which is connected to the eject pouch actuator 583 of the signal booster valve assembly 355, FIGURE 8.

The impulse valve 584 which is operated by the pouch actuator 583 has two output lines 585 and 586, line 585 being connected to the on control line 484 of the eject on-otf valve 483, FIGURE 9. The serially connected flow lines 600 and 601 of the blocking valves 602 and 603 are also connected to said control line 582. The control lines 604 and 605 of valves 602 and 603 are connected to the respective output lines for the #5 and #6 hole secondary valves 558 and 559. The start hole of the tracker 70 is connected by a line 606 to the how lines 607 of the blocking valve 562 said lines 607 in turn being connected to a line 610. Line 610 is connected to the control line 611 of the start pouch actuator 612, FIGURE 8, 0f the booster valve assembly 355. The impulse valve 613 which is operated bythe pouch actuator 612 has two output lines614 and 615, line 614 being connected to the flow lines 440 of the blocking valve 441, FIGURES, while the other output line 615 is connected to the control line 4850f the eject on-olf valve 483, FIGURE 9.

The reader record feed control valve assembly 135 FIGURE 9, is capable of being controlled from the record or tracker bar in a manner similar to that just described for the start code and may also be controlled either by the output from one of the blocking valvesof the decoder, or manually from the control panel 136, FIGURE 11.

to the off control line 437, FIGURE 9, of the start-stopv 16' For example, how linca620 of the decoder blocking valve l-3 are connected by a line not shown to a line 621, FIG- URE 8, that is in turn connected to the control line 622 of a stop pouch actuator 623, FIGURE 8, of the booster valve assembly 355. The impulse valve624 operated by said pouch actuator 623 has two output lines 625 and 626,

line 625 being connected to the said output line 586. Line 586 is connected to a line 627 which in turn is connected on-olf valve 435, FIGURE 9.. The other output line 626 of the impulse valve 624, FIGURE 8, is connected to lines 615 and 485 which control the eject on-ofl valve 483. These same control lines 582, 611 and 622, FIGURE 8, for the pouch actuators 583, 612 and 623 respectively, may be controlled from the control panel 136. Here the lowermost start impulse valve 630, FIGURE 11, of the right hand reader column of manually operable impulse valves is connected by a line 631 to said line 610 which in turn is connected to the said pouch actuator control line 611. The next to the bottom stop impulse valve 632 isconnected by a line 633 to said line 621 which in turn is connected to said stop pouch actuator control line 622. The eject impulse valve 635 has two output lines 636 and 637; line 636 being connected directly to the line 582 for the control line of the eject pouch actuator 583 while the line I 637, FIGURES ll, 7, 8 and 9 is connected to the control line 503 for selector supply primary valve 504, FIGURE 9.

The other manually operable impulse valves of the control panel 136 have connections which will now be described. The manually operable delete impulse valve 650 has an output line 651 which is connected to the control line 216 of the punch supply control valve 203. The auxiliary stop impulse valve 663 is connected by line 664 to the control line 665 of thcion-olf valve 665. The select impulse valve 667 has an output line 670 that is connected to the control line 671 of an on-oifvalve 672 of said valve assembly 662. The oft impulse valve 673 has four output lines 674, 675, 676,and 677, lines 675, 676 and 677 being respectively connected, to the control lines 681, 682 and 683 of said on-olf valves 666, 672 and 661, while line. 674 is connected to the control line 684 of the fourth on-off valve 685 of said valve assembly 662, FIGURE 7. The output line 686 from the on-ofi valve 685 is connected by a line 687 to the port 211 of the main pneumatic control switch 206 on the control panel 136, port 211 being operatively connected to port 210 during a reading operation.

There are four special codes, namely the A-2 unit on), A1 (punch unit off), H-5 (select), and H-6 (auxiliary stop) which may be perforated during a punch operation by the manual operation of the respective impulse valves 260, 261, 262 and 263 of the control panel 136, FIGURE 11. During a subsequentreadiug and/or record reproducing operation these four special functioncodes may be used to operate certain punch controls and reader record feed controls as will now be described. The blocking valve A-2 of the decoder is connected by a line 700 partially shown in FIGURE 8 to the punch actuator 701 of the booster valve assembly 355. The pouch actuator 701 is adapted to operate an impulse valve 702 which has three output lines 703, 704 and 705, line 704 being conntected to said common control line 360. The A-1 blocking valve of decoder134 is connected by a line 710 partially shown in FIGURE 8 to a pouch actuator 711 of said valve assembly 355. Pouch actuator 711 is adapted to operate an impulse valve 712 having output lines 713, 714 and 715, line 714 being connected to said common line 360. The blocking valve H-S of said decoder 134 is connected by a line 716, partially shown in FIGURE 8, to a pouch actuator 717 of the valve assembly 355. The pouch actuator is adapted to operate an impulse valve 720 having three output lines 721, 722 and 723, line 722 being connected to-said common line 360. The blocking valve H-6 of the decoder 134 is connected by a line 730, partially shown in FIG- valve network 750 have been made slightly different for the sake of clarity and convenience; here the flow lines of the blocking valves connect with the small circles inside each of the larger valve designating circles while the valve control lines connect with the said larger circles. Each blocking valve symbol has within its circle the lettor designations SP, SR, RPS or PS. Valves having the letters SP and SR have control lines which are connected to a sub-atmospheric pressure line when the main switch is in punch and reader positions SP and SR respectively. In similar fashion any valves having the letters PS has its control line connected to the punch supply while the valves having the letters RPS are connected to the said reverse punch supply line 463; FIGURE 9. When the valves marked PS are open the valves marked RPS will be closed, and vice versa. The said impulse valve output line 703 is connected to a flow line 751 of a blocking valve 754 whose other flow line 755 is connected to the flowline 756 of a blocking valve 757. The other fiow line 760 of valve 757 is connected to the control line 761 of said punch supply on-otf valve 685, FIGURE 7. The other output line 705 of said impulse valve 702, FIGURE 8, is connected to the fiow line 762 of a block ing valve 763 whose other flow line 764 is connected by a line not shown to the secondary valve associated with number two code hole bellows of the punch unit. The output line 713 of impulse valve 712 is connected to a flow line 770 of a blocking valve 771 whose other flow line 772 together with the flow line 773 is connected to a line 774. Line 774 is connected by a line not shown to the secondary valve 226 associated with the A hole code bellows 46' of the punch unit. The flow line'770 of valve 771 is connected to a fiow line 775 of blocking valve 776 whose other flow line 777 is connected to said control line 684 of said punch supply on-off valve 685. The output line 715 from said impulse valve 712, FIGURE 8, is connected to a flow line 780 of a blocking valve 781 whose other flow line 782 is connected by a line not shown to the secondary valve associated with the number 1 code hole bellows of the punch unit. The output line 721 of said impulse valve 720 is connected to a flow line 800 of a blocking valve 801 whose other flow line is connected to a flow line 802 of a blocking valve 803. The other fiow line 804 of blocking valve 803 is connected to the output line 530 of said impulse valve 527, FIGURE 10. Line 804 is also connected to a line 805, FIGURE 8, which is connected to said line 627. The flow line 880 is also connected to a fiow line 8-06 of a blocking valve 807 whose other flow line 810 is connected by a line not shown to the secondary valve associated with the number code hole bellows of the punch unit. The output line 723 of the impulse valve 720, FIG- URE 8, is connected first to the flow line 811 of a blocking valve 812 and secondary to the flow line 813 of a blocking valve 814 whose other output line 815 is connected to the flow line 816 of a blocking valve 817. The other flow'line 820 of valve 817 is connected to the control line 484 of the eject on-off valve 483, FIGURE 9. The output line 734 of the impulse valve 732 is connected to the flow line 825 of a blocking valve 826 whose flow line 927 together with the flow line 930 of blocking valve 812 is connected to a line 831 that is in turn connected by a line not shown to the secondary valve ascociated with the H code hole bellows of the punch unit. The How line 825 of valve 826 is also connected to the fiow line 832 of a blocking valve 833 whose other flow line 834 is connected to the flow line 835 of a blocking valve The other flow line 837 of valve 836 is connected through line 621 to the control line 622 of the said stop pouch actuator 623. The output line 735 of the impulse valve 732 is connected by a line not shown to the secondary valve associated with the number 6code h-ole bellows of the punch unit.

The four blocking valves 803, 817, 836 and 757 of the blocking valve network 750, FIGURE 8, have con-'- trol lines 840, 841,842 and 843 respectively, lines 840 and 841 being connected to the output line 845 of the.

select on-ott valve 672, FIGURE 7, line 842 being connected to the output line 846 of said auxiliary stop on, off valve 666, FIGURE 7, and line 843 being connected to the output line 663 of said on-otf valve 661, FIGURE 7. The on-off valve assembly 662, FIGURE 7, and the blocking valve network 750, FIGURE 8 are provided so that when conditioned during a record reading operation several program controls are obtainable as will be explained below. As was noted above the control panel 136 of the instant apparatus is provided with a first vertical column of manually operable impulse valves 260-268 which are associated with record punching operations.

All of these valves are operative when the main switch 206 is in a punch position SP or when the punch on code A-2 is effective when the switch is in the reader position SR.

record reading operations. Here the start stop, eject and unshift impulse valves are operative when the main switch is in either the punch or reader positions SP or SR, while the advance punch, auxiliary stop, select and ofi: impulse valves are operative only when the main switch 206 is in a reader position SR. When. the main switch is in a central correct position SC none of the punch control impulse valves 260-268 are operative and only the start, stop and eject valves on the reader side of the panel are operative.

An explanation was previously made as'to the operation of the punch unit, i.e. a description was made for an exemplary record punching and feeding operation. A description will now be made for an exemplary record reading and feeding operation with particular emphasis on the record feeding aspects of the operation. The

main switch handle 207 is first moved to a reader posifeed interlock control valve assembly 135, FIGURE 9,

to the line 537, FIGURE 13, punch supply valve 203 (FIGURE 6), and the main switch 206, FIGURE 11.

The selector supply primary valve 504, FIGURE 9, will provide a sub-atmospheric pressure supply SS through v line 510 to the typewriter actuating selector unit 133, FIGURE 12, and to the various other lines and valve assemblies marked with the letters SS. The punch supply (PS) is not on at this time so that a sub-atmospheric pressure will exist in the reverse punch supply (RPS) line,

FIGURE 9, and the RPS line 846, FIGURE 6, connected thereto by a line not shown. When no record is on the tracker bar 70 the open number 8 hole in said tracker bar allows atmospheric pressure to exist in the line 536 which in turn closes the six blocking valves 540, 541, 40 1, 542, 543 and 544, FIGURE 13, thereby disabling the decoder 134. The atmospheric pressure in line 536 also closes blocking valves 533 and 534.

Before continuing with the explanation of the record reading operation, a description of the normal condition of the valves in the record feed control valve assembly will be made. In that the punch supply is not now turned on an atmospheric pressure will exist in the control line 453 of the secondary valve 454 thereby causing a The second vertical column of manually operable impulses valves 653, 655, 663, 667, 673, 635, 650, 632 

1. IN A PNEUMATICALLY CONTROLLED DATA PROCESSING SYSTEM HAVING A TYPEWRITER WITH APPROPRIATE ALPHANUMERIC AND FUNCTION KEYS, SAID TYPEWRITER HAVING AN IMPULSE VALVE ASSOCIATED WITH EACH OF SAID KEYS AND COMPRISING PART OF A CIRCUIT INCLUDING A VACUUM SUPPLY, SAID IMPULSE VALVE BEING OPENABLE TO ATMOSPHERE UPON DEPRESSION OF A TYPEWRITER KEY, SAID IMPULSE VALVE HAVING A PAIR OF OUTPUT PORTS FOR CONNECTION TO ATMOSPHERE WHEN SAID VALVE IS OPENED BY A TYPEWRITER KEY DEPRESSION, A SECONDARY VALVE HAVING A CONTROL PORT CONNECTED TO ONE OF SAID IMPULSE VALVE OUTPUT PORTS, SAID SECONDARY VALVE INCLUDING AN OUTPUT PORT CONNECTABLE TO SAID VACUUM SUPPLY UPON OPERATION OF SAID SECONDARY VALVE, A BELLOWS CONNECTED TO SAID SECONDARY VALVE OUTPUT PORT AND OPERABLE TO BE COLLAPSED WHEN SAID SECONDARY VALVE IS CONNECTED TO VACUUM BY AN ATMOSPHERIC PULSE TRANSMITTED FROM SAID IMPULSE VALVE IN RESPONSE TO DEPRESSION OF SAID KEY, A PUNCH CONNECTED TO SAID BELLOWS FOR RECORD PUNCHING ACTUATION THEREBY UPON COLLAPSE THEREOF FOR PUNCHING A CODE HOLE IN A RECORD STRIP, A SECOND SECONDARY VALVE HAVING AN OUTPUT PORT AND A CONTROL PORT CONNECTED TO THE OTHER OF SAID IMPULSE VALVE OUTPUT PORTS, A SECOND BELLOWS CONNECTED TO THE OUTPUT PORT OF SAID SECOND SECONDARY VALVE AND OPERABLE TO BE COLLAPSED WHEN SAID SECOND SECONDARY VALVE IS CONNECTED TO 